Pysics of Pocket Billiards

9Ballr

9Ballr

AzB Silver Member
Silver Member
Does anyone know where I can get The Physics Of Pocket Billiards by Wayland Harlow at a reasonable price?
All I've seen is 300 bucks and up.
That's about 10x more than I'm willing to pay for it.

Here's an example of the prices I've seen:

http://www.amazon.com/Physics-Pocke...spell&keywords=the+physics+of+pocket+biliards

If anyone else is interested in the physics/trig/science of this game we play, here is a link you might enjoy.

May have to have dig up your old calculus book.

http://www.sfbilliards.com/Misc/Shepard_apapp.pdf
 
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9Ballr said:
Does anyone know where I can get The Physics Of Pocket Billiards by Wayland Harlow at a reasonable price?
All I've seen is 300 bucks and up.
That's about 10x more than I'm willing to pay for it.

Here's an example of the prices I've seen:

http://www.amazon.com/Physics-Pocke...spell&keywords=the+physics+of+pocket+biliards

If anyone else is interested in the physics/trig/science of this game we play, here is a link you might enjoy.

May have to have dig up your old calculus book.

http://www.sfbilliards.com/Misc/Shepard_apapp.pdf
Click to expand...
At one time I had all the remaining stock of "The Physics of Pocket Billiards." The author's name was Wayland "Skip" Marlow, not Harlow. Amazon has it wrong in some listings. I was selling them for $30 and many of the buyers were immediately putting them back up on Amazon for $100 or more. That's the problem with books that were well done but in very limited printing.

I may have an extra copy available but it will be $100 including shipping. If I get up the energy and my scanner is working, and I have an extra copy that I can de-spine, I may put up a PDF of the book -- that's within the copyright restrictions Skip set.

The book has several interesting experiments including a measurement of the the ball-ball contact time versus shot speed. (It more or less confirmed Hertz's Law.) The main weakness of the book -- in my view -- is that it does not separate the ideas that are important to play from those that are merely technically interesting.

Here are some scans. The cover:

marlow_cover.jpg

The contact time experiment:

Marlow 001.jpg

An analysis of the cue ball follow angle versus cut angle and ball-ball friction:

marlow 002.jpg
 
This is great.
Love this.
However I don't love it 100 dollars worth.
I'll just keep looking. 30 bucks is more than enough for me.
Especially since I'm only interested in a few of the pages in it.
Should've gotten a copy a long time ago when I could.

Thanks for replying and showing those pages.
Very cool stuff all over in this book.
 
9Ballr said:
Actually it's two things:

Kinetic energy.
and
Conservation of angular momentum

...
Click to expand...
Dr. Dave probably covers these in his technical papers. Have you looked through those?

The translation of the Coriolis book into English is available for about $30 from Dave Nadler (the translator). It is available in photocopy reproduction (in French) also for about $30 from Barnes & Noble.
 
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9Ballr said:
Actually it's two things:

Kinetic energy.

Qa - Qi = e Qa
where e is not constant (if N is constant).
Q = (1/2) (M W2 + I W*2 + M' W'2 + I' W*'2)
Click to expand...
The following analysis covers kinetic energy, as related to a pool shot, fairly well:

TP A.30 - The effects of cue tip offset, cue weight, and cue speed on cue ball speed and spin

9Ballr said:
and

Conservation of angular momentum

I W*i = I W*a + GC x P
I' W*'i = I' W*'a + G'C x (-P)
where vectors W*i and W*'i are to be determined.
Click to expand...
Here's an example of how momentum principles (including rotation) are used to analyze a pool principle:

TP A.27 - Spin transfer

And many of my other TP analyses include energy (translation and rotation), momentum (linear and angular), and impact principles. They can all be found here:

Technical Proof Pool and Billiards Analyses

I hope that helps,
Dave
 
Thanks Dave.

I'll have a look.

Also thanks for all the work you've put into this.
 
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